Floribunda rose plant named `Jacyesp`

ABSTRACT

A new and distinct variety of rose plant of the floribunda class, having attractive yellow flowers arranged in clusters; long stems; good vase life; good production; and moderate fragrance.

The present invention relates to a new and distinct variety of roseplant of the floribunda class which was originated by me by crossing thevariety INTERval, U.S. Plant Pat. No. 5648, with an unnamed yellowfloribunda seedling.

The primary objective of this breeding was to produce a new rose varietyhaving the long stems, good production, good vase life, fragrance andtendency to flower in clusters of the female parent combined with theclustering ability of the unnamed seedling male parent and its mediumyellow flower color. The objective was substantially achieved, alongwith other desirable improvements, as evidenced by the following uniquecombination of characteristics that are outstanding in the new varietyand that distinguish it from its parents, as well as from all othervarieties of which I am aware:

1. Attractive yellow flowers arranged in clusters;

2. Long stems;

3. Good vase life;

4. Good production;

5. Moderate fragrance.

Asexual reproduction of this new variety by budding, as performed atWasco, Calif., shows that the foregoing and all other characteristicsand distinctions come true to form and are established and transmittedthrough succeeding propagations.

The accompanying illustration shows typical specimens of the vegetativegrowth and flowers of this new variety in different stages ofdevelopment, depicted in color as nearly true as it is reasonablypossible to make the same in a color illustration of this character.

The following is a detailed description of my new rose cultivar withcolor descriptions using terminology in accordance with The RoyalHorticultural Society (London) Colour Chart, except where ordinarydictionary significance of color is indicated.

Parentage:

Seed parent.--INTERval (U.S. Plant Pat. No. 5648).

Pollen parent.--Unnamed floribunda.

Classification:

Botanical.--Rosa hybrida.

Commercial.--Floribunda.

FLOWER

Observations made from specimens grown in a greenhouse environment atSomis, Calif. from March 1996 to January 1997.

Blooming habit: Recurrent.

Bud:

Size.--1 to 11/4 inches long when the petals start to unfurl.

Form.--The bud form is long, pointed ovoid.

Color.--When sepals first divide, bud color is Yellow-Orange Group 14C.When half blown, the upper sides of the petals are Yellow-Orange Group14C fading to Yellow-Orange Group 14D on the outer petals, especiallythe edges of those petals; and the lower sides of the petals areYellow-Orange Group 14C.

Sepals.--Color: Green Group 138C. Surface texture: Covered in finehairs. There are three normally to heavily appendaged sepals. There aretwo unappendaged sepals with hairy edges.

Receptacle.--Color: Green Group 137C. Shape: Funnel. Size: Small(5/16×1/4 inch). Surface: Smooth.

Peduncle.--Length: Short (2 inches to 21/2 inches). Surface: Smooth.Color: Medium green. Strength: Stiff, erect.

Bloom:

Size.--Small. Average open size is 21/2 to 3 inches.

Borne.--Several together, in clusters. Clusters: Flat to slightlyrounded.

Stems.--Long, strong. Average length is about 18-22 inches.

Form.--When first open: High centered. Permanence: Flattens; all petalscurl.

Petalage.--Number of petals under normal conditions: 30.

Color.--The upper sides of the petals are Yellow-orange Group 14C fadingto Yellow-Orange Group 14D on flower edges. The reverse sides of thepetals are Yellow-orange Group 14C. The base of each petal has a small(1/16×1/16 inch) deep yellow half moon at the point of attachment to thepetal base. The major color on the upper side is Yellow-Orange Group14C.

Variegations.--None.

Discoloration.--The general tonality at the end of the first day: Nochange. At the end of the third day: Slow change on the plant toYellow-Orange 14C. Eventually, (day 5 or 6 on the plant) there is fadingon the flower petal edges to Yellow-Orange Group 18D.

Fragranc.--Moderate.

Petals:

Texture.--Thick.

Shape.--Deltoid.

Form.--Tips slightly recurved; edges slightly quilled.

Arrangement.--Imbricated, with few petaloids in the center.

Persistence.--Petals drop off cleanly.

Lastingness.--On the plant: Long (7 days). As a cut flower: Long (11days).

Reproductive parts:

Anthers.--Size: Medium. Quantity: Many. Color: Yellow. Arrangement:Regular around styles.

Filaments.--Color: Yellow.

Pollen.--Color: Gold yellow.

Styles.--Color: Yellowish white.

Stigmas.--Color: Greenish white.

Form: Bush.

Growth: Vigorous, upright, branching. Unpruned plant in the greenhouseafter one year will be 6 to 61/2 feet tall by 3 to 31/2 feet wide. Plantwill produce 160-170 stems per square meter of greenhouse.

Foliage:

Number of leaflets on normal mid-stem leaves.--5.

Size.--Medium (41/2×3 inches).

Quantity.--Normal.

Color.--New foliage: Greyed-Orange Group 173A but very quickly turninggreen. Old foliage: Upper surface: Green Group 139A; lower surface:Green Group 136C.

Leaflets:

Shape.--Oval.

Texture.--Upper side: Leathery.

Edge.--Serrated.

Serration.--Single, small.

Petiole rachis.--Color: Green.

Petiole underside.--Smooth.

Stipules.--Short (1/2inch), serrated, bearded.

Disease resistance.--Resistant to mildew under normal growing conditionsat Somis, Calif. Not tested for resistance to rust or blackspot.

Wood:

New wood.--Color: Light green. Bark: Smooth.

Old wood.--Color: Green. Bark: Smooth.

Prickles:

Quantity.--On main canes from base: Few. On laterals from main canes:Few.

Form.--Short (1/4 inch), straight.

Color when young.--Green.

Small prickles:

Quantity.--On main stalks: None. On laterals: None.

I claim:
 1. A new and distinct variety of rose plant of the floribundaclass, substantially as herein shown and described, characterizedparticularly as to novelty by the unique combination of its attractiveyellow flowers arranged in clusters; long stems; good vase life; goodproduction; and moderate fragrance.